Casting apparatus.



No. 759,568. PATENTED MAY 10, 1904. G. STROH.

CASTING APPARATUS.

APPLICATION FILED JULY 20. 1903.

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PATENTED MAY 10, 1904. G. STROH.

CASTING APPARATUS.

APPLICATION FILED JULY 20. 1003.

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UNITED STATES Patented May 10, 1904.

GEORGE STROH, OF SYRACUSE, NEWV YORK.

CASTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 759,568, dated May 10,1904.

I Application filed July 20, 1903. Serial No. 166,254. (No modeL) To allwhom, it may conccrnr Be it known that I, GEORGE S'rRm-I, a citizen ofthe United States, and a resident of Syracuse, in the county ofOnondaga, in the State of New York, have invented new and usefulImprovements in Casting Apparatus, of which the following, taken inconnection with the accompanying drawings, is a full,clear,and exactdescription.

This invention relates to the class of casting apparatus in whichartificial pressure is applied to the molten metal in the melting-pot toforce said metal into the mold or matrix.

The chief object of the invention is to protect the working parts of theapparatus from the intense heat applied to the apparatus during theoperation thereof; and the object also is to provide a casting apparatuswhich shall have the component parts of its frame securely united, so asto effectually guard against disturbance of their required relativeposition; and to that end the invention consists in the ll'l'lpl'OVGdconstruction and combination of the frame of the apparatus and itsappliances, as hereinafter described, and set forth in the claims.

In the accompanying drawings, Figure 1 is a vertical longitudinalsection through the center of an apparatus embodying my invention. Fig.2 is a plan view of the said apparatus. Fig. 3 is a horizontallongitudinal section on line X X in Fig. l, and Fig. 4c is a verticaltransverse section on line Y Y in Fig. 1.

The apparatus comprises a cast-metal frame composed of vertical sidewalls a a and an end wall a and is preferably seated on a metalbase-plate A. On the said frame is mounted a plate 6, provided with anorifice 0, the melting-pot (Z directly under said orifice, the chute 6,extending from said pot, preferably near the bottom thereof andascendingly through the top plate; the inclined duct f, ex tending fromthe bottom of the pot and terminating in the cylindrical chamber 9, thetransverse wall It, extending from said chamber to the top plate, andthe valve-case i, having a vertical channel z" extending to the bottomof the lower end of the ductf, said parts being cast integral with thetop plate L and all sustained in position by rods a 0 The orifice 0 isscrew-threaded and has secured therein the threaded bottom portion ofthe discharge-nozzle which is provided with a flange j, by which it isseated in a recess in the top of the plate 6. The top of the nozzle ispreferably beveled to fit close to a correspondinglvbeveled recess in ablock 7c, secured in a mortise in the under side of a plate P, which ispivotally or otherwise removably supported on the top plate I) of theframe.

The block is provided with anorifice which registers with the mouth ofthe nozzle j and with an orifice it" in the plate P, upon which ismounted in any suitable manner the mold or matrix designed to receivethe molten metal from the melting-pot (Z. The metal to be melted isintroduced into the pot (Z through the chute which is prolonged andprovided near its outer end with a suitable cut-oil valve & to preventescape of heat through said duct during the melting process.

The ductf is extended descendingly from the melting-pot (Z and isprolonged suflieientl y to gradually recede from the heat applied to themelting-pot, and thus protect from excessive heat the cylindricalpressure-chamber g, in which moves a plunger D for forcing the metalinto the melting-pot (Z and expelling sufficient melted metal throughthe nozzle 7' to fill the mold or matrix mounted on the plate P.

The plunger D may be operated by a lever O, pivotally connected to theframe of the apparatus, as shown at O, or by steam or gas or hydraulicpower.

The valve 1 in the case 2' must obviously be closed during the operationof the apparatus and is only opened when required to clean themelting-pot and the duct f and cylinder g.

O represents a combustion-chamber, the main portion of which inclosesthe meltingpot and extends around the greater portion thereof. Saidcombustion-chamber is formed with an extension O around the ductf andreduced in width, as shown in Fig. 1 of the drawings, which extensionserves to heat the said duct suffieiently to melt the metal containedtherein preparatory to being forced into the melting-pot d by the actionof the plunger D. The extension O of the combusspace n n representsuitable burners, which communicate with the combustion chamber 0 aroundthe melting-pot (Z, so as to heat the same to the required temperatureto properly melt the metal in said pot. The burners are to be properlydistributed around the melting-pot to heat it uniformly from all sides,and therefore the extra burner 12 (shown in Figs. 1 and 3) may bedispensed with.

t 25 designatepeep-holes through which to observe the temperature of theheat impinging the melting-pot.

WVhat I claim as my invention is v 1. The combinationwith themelting-pot provided with a discharge-port at its top, of a duct tappingthe bottom of the melting-pot and extended descendingly therefrom, apressure-chamber communicating with the lower end of said duct, and aplunger in said chamber as set forth.

2. The combination with the melting-pot provided with a discharge-portat its top, of

a duct tapping the melting-pot and extended descendingly therefrom, apressure-chamber connected to the lower end of said duct, and awaste-cock connected to the duct at its junction with thepressure-chamber as set forth.

3. The combination with the melting-pot, of a duct tapping the bottom ofsaid pot and extending downward therefrom, a combustionchamber inclosingthe melting-pot and extended lengthwise of the aforesaid duct, apressurechamber connected to said duct remote from the melting-pot, andmeans for applying pressure to said chamber.

4. The combination with the melting-pot, of a duct tapping the said potand extended descendingly therefrom, a combustion-chamber inclosing themelting-pot and extended lengthwise of the aforesaid duct, burnerscommunieating with the combustion-chamber adjacent to the melting-pot, apressure-chamber connected to the lower end of the duct, and means forapplying pressure to the interior of said chamber.

5. The combination with the melting-pot, of a duct tapping the bottom ofsaid pot and extended descendingly therefrom, a combustionchamberinclosing the melting-pot and extended lengthwise of the duct, burnerscommunicating with the combustion-chamber adjacent to the melting-pot, apressure-chamber connected to the lower end of the duct, a plunger insaid chamber, and a waste-cock connected to the duct adjacent to thepressurechamber as set forth.

6. The combination with the melting-pot, of v ,chamber connected to thelower end of said duct, a plunger in said chamber, a supplychuteextended descendingly to the meltingpot, a cut-off valve connected tothe upper end portion of the chute, and a combustion-chamber inclosingthenielting-pot and extended lengthwise of the aforesaid duct as setforth.

8. The combination with the melting-pot, of a duct tapping the bottom ofsaid pot and extended descendingly therefrom, a pressurechamberconnected to the lower end of said duct, a plunger in said chamber, awaste-cock connected to said duct adjacent to the pressure-chamber, asupply-chute extended descendingly to the melting-pot, a cut-off valveconnected to the upper end portion of said chute, a combustion-chamberinclosing the melting-pot and extended lengthwise of the aforesaid duct,and burners communicating with the combustion-chamber adjacent to themelting-pot as set forth.

9. The within-described frame for metalcasting apparatus, consisting ofside walls, and a top plate provided with an orifice, a pot directlyunder said orifice, a chute extending from said pot through the topplate, an inclined du ct extending from the pot and terminating in acylindrical chamber, a transverse wall extending from said chamber tothe top plate, and a valve-case having a vertical channel extending tothe bottom of the lower end of the aforesaid duct all cast of metal asset forth and shown.

GEORGE STROH.

WVitnesses:

J. J. LAASS, WV. H. MEIER, Jr.

